Answer:
C
Explanation:
I think its C . A transcriptional repressor usually represses the transcription pathway when its active. According to the question, the repressor is not usually active until an effector molecule binds to it making it active and blocking the transcription pathway. So if the region where the effector binds on the repressor is mutated i.e. it turns nonfunctional that means the effector cannot bind to repressor which means repressor cannot become active to block transcription which in turn increases the transcription of gene A because repressor cannot repress it since it is inactive due to its inability to bind to the effector.
ALOT of words please lmk if it makes sense
The scientist that thought he had proven that plants obtain their nutrients from water rather than soil is Van Helmont.
surface waves are the most destructive seismic wave
Answer:
it is very long but for kind information you can find it in your science book
Explanation:
in modern graded book
